I bought these hella cute Vibram Five Finger mary janes just before they discontinued their most elegant design. Not only is the top strap adjustable, there are two separate straps on either side of the heel to insure a perfect fit. They were slightly too large for me and thus sat in my closet for years waiting for a wearer with an intriguing sense of style. Fits best for people who range on the high end of 6.5 - 7. Additional information on request. Happy shopping!